Septic tank



y 1931 J. G. LAUBHEIMER 1,807,296

SEPTIC TANK Original Filed July 16, 1928 2 Sheets-Sheet 1 X Inventor g 2/. Zm/ fie/Mer Amrney y 26, 1931- J. G. LAUBHEIMER 7, 6

SEPTIC TANK Original Filed July 16, 1928 2 Sheets-Sheet 2 I fzwentvf Attorney- Patented May 26, 1931 UNITED STATES JOHN G. LAUBI-IEIMER, F NASHVILLE, '1EN1\TESSEE SEPTIC TANK Application filed July 16, 1928, Serial No. 293,143. Renewed November 1, 1930.

The present invention relates to a septic tank, and has for its prime object to provide a plurality of concrete slabs of such character that they may be readily handled manually and assembled by comparatively unskilled workmen into a septic tank for positioning in any particular location.

A still further very important object of the invention resides in the provision of a septic tank of this nature, which is inexpensive in its construction, strong and durable,

thoroughly efficient and reliable in use and operation, and otherwise well adapted to the purpose for which it is designed.

1b With the above and numerous objects in view as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be 20 hereinafter more fully described and claimed.

In the drawings:

Figure 1 is a side elevation of the septic tank embodying the features of my invention.

Figure 2 is a horizontal longitudinal section therethrough taken substantially on the line 22 of Figure 1.

Figure 3 is a transverse vertical section therethrough, and

Figure 4 is a longitudinal sectional section therethrough.

Referring to the drawings in detail, it will be seen that the numeral 5 denotes a concrete slab bottom provided on its upper surface adjacent its side and end edges with U-shaped grooves 6 and 7 respectively and a transverse intermediate U-shaped groove 8. Side wall slabs 9 have their lower edges resting in the grooves 6. End wall slabs 10 and 11 have.

40 their lower edges resting in grooves 7. The side wall slabs are provided with grooves 12, to receive the side edges of the end wall slabs 10 and 11, and with intermediate grooves 14, rising from the grooves 8. A partition has its lower edge resting in the groove 8 and its side edges in the grooves 14. The side wall slabs have their portions in which the grooves 1 12 and 14 are formed thickened for strengthening purposes. 1 V

The edges of the end wall slabs and partition slabs which are received in the respective grooves are gradually thickened as is indicated at 16. Oakum 17 is forced into the grooves and cement 18 is packed thereover. The partition slab 15 is provided with a pair of openings 19 arranged in spaced relation at about the vertical center of the slab. Top slabs 20 and 21 rest on the wall slabs and the partition slabs and haveplug openings 22 and 23 respectively.

A pipe 24 leads outwardly from the top of the end wall slab 11. A T-fitting 25 is mounted adjacent the upper portion of the end wall slab 10 and connects with a pipe 26,.leading through the wall slab 10 and a pipe 27 leading upwardly from the top slab 20. Y

The outer surfaces of the, wall. slabs are corrugated as is disclosed to advantage in Figures 1 and 3. The locking joints provided by the oakum and the heat cement in connection with the thickened edges of the slabs, 10, 11, and 15, afford strength to the assembled unit. The tank is very economical to in stalldue to its being in sections and can be erected by two or three men. This tank has the capacity and design to accomplish its work. The sewage enters through the pipe 22 and T 25 into the chamber 28, where it is deposited until it is liquefied or dissolved. This chamber is liquid tight and holds the water until the solid matter is broken up. The baflle or partition 15 has the two openings 19 so as to provide a proper obstruction so that the flow is properly timed and causes the breaking up of the current, thereby allowing the solid material to settle at the bottom. These holes 19 are located below the scum line which keeps from breaking up this condition as the liquid matter goes through these parts into the clear water chamber 29.

These holes are also above the sludge line and are midway of the working space in the tank. Water is discharged through the overflow 24 to be absorbed by the ground. This tank may be manufactured in various sizes.

It is thought that the construction, utility and advantages of this invention will now be quite apparent to those skilled in this art without a more detailed description thereof. The present embodiment of the invention has been disclosed in detail merely for the purposes of exemplification, since in actual v practice it attains the features of advantage, enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to, without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

A septic tank of the class described comprising a bottom slab formed with continuous marginal U-shaped grooves, along its sides and ends, a transverse U-shaped groove intermediate its ends, a pair of individual end and side walls having their lower edges disposed in said groove, each of the said side Walls being formed with U-shaped marginal grooves at each end, and a transverse groove intermediate its ends, which are in alignment with the grooves at the ends and intermediate groove on the bottom slab, a partition Wall seated in the aligned grooves on the bottom slab and sides intermediate their ends to form a sealed partition dividing theinterior of the tank into two compartments, said partition having openings therein spaced above the bottom slab and below the scum. line and above the line of sedimentation, an outlet conductor extending through one end wall above the openings in the partitions, an inlet conductor extending through the other end wall, a pair of covers resting on the edges of the side, end and partition walls, a

T-fitting connected with the inner end of the outlet conductor having one branch extenting through and above one cover to vent the one compartment and the other branch extending down into the tank, all of the ends of the walls confined within the grooves flaring outwardly in the margins adjacent the edges on one side to provide anchorage, and oakum and cement joints packed in the groove on said one flare edge side.

In testimony whereof I afii); my signature JOHN G. LAUBHEIMER. 

